多孔大跨度连续梁桥减隔震技术应用研究
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摘要
以一座多孔大跨度连续梁桥为工程背景,研究了抗震分析中是否考虑摩擦支座的摩擦效应对分析结果的影响,以及采用摩擦支座并联阻尼器和双曲面球型减隔震支座2种减隔震方案的减震效果。结果表明:对于多孔大跨度连续梁桥,考虑摩擦效应后固定墩的地震力显著小于不考虑时的分析结果;在考虑摩擦效应的基础上,2种减震方案均可减小固定墩的地震反应,而双曲面球型减隔震支座方案具有更优的减震效果;摩擦支座并联阻尼器方案减震效果不佳的主要原因是支座摩擦力和阻尼器阻尼力间存在90°的相位差。
A continuous girder bridge was selected as the practical engineering background.Influence of the frictional effect from frictional bearings on seismic analysis,seismic isolation effects of two methods that the bridge was respectively supported on frictional bearings with parallel dampers and double spherical aseismic bearings were studied.Results show that after taking frictional effect into account,seismic forces of the fixed pier are far smaller than those of response spectrum analysis.Considering frictional effect,the seismic isolation methods can reduce the seismic forces and double spherical aseismic bearing has better seismic isolation effect.The main cause why the seismic isolation effect from frictional bearings with parallel dampers is inoperative is that there is a phase difference of 90° between the bearing friction force and the damping force.
A continuous girder bridge was selected as the practical engineering background.Influence of the frictional effect from frictional bearings on seismic analysis,seismic isolation effects of two methods that the bridge was respectively supported on frictional bearings with parallel dampers and double spherical aseismic bearings were studied.Results show that after taking frictional effect into account,seismic forces of the fixed pier are far smaller than those of response spectrum analysis.Considering frictional effect,the seismic isolation methods can reduce the seismic forces and double spherical aseismic bearing has better seismic isolation effect.The main cause why the seismic isolation effect from frictional bearings with parallel dampers is inoperative is that there is a phase difference of 90° between the bearing friction force and the damping force.
引文
[1]范立础,卓卫东.桥梁延性抗震设计[M].北京:人民交通出版社,2001.FAN Li-chu,ZHUO Wei-dong.Bridge Ductility Sys-tem Design[M].Beijing:China CommunicationsPress,2001.
[2]范立础,王志强.桥梁减隔震设计[M].北京:人民交通出版社,2001.FAN Li-chu,WANG Zhi-qiang.Bridge Seismic Damp-ing or Isolation System Design[M].Beijing:ChinaCommunications Press,2001.
[3]王志强,胡世德,周红卫,等.卢浦大桥减、隔震装置的研究[C]//李坚,周世忠.第十五届全国桥梁学术会议论文集.上海:同济大学出版社,2002:372-379.WANG Zhi-qiang,HU Shi-de,ZHOU Hong-wei,et al.Research on Seismic Damping or Isolation Sys-tem for Lupu Bridge[C]//LI Jian,ZHOU Shi-zhong.Proceedings of the 15th National Conference onBridge Engineering.Shanghai:Tongji UniversityPress,2002:372-379.
[4]JANGID R S.Seismic Response of Isolated Bridges[J].J Bridge Eng,2004,9(2):156-166.
[5]JANGID R S.Stochastic Response of Bridges Seis-mically Isolated by Friction Pendulum System[J].JBridge Eng,2008,13(4):319-330.
[6]MATSAGAR V A,JANGID R S.Base Isolation forSeismic Retrofitting of Structures[J].Practice Period-ical on Structural Design and Construction,2008,13(4):175-185.
[7]KUNDE M C,JANGID R S.Effects of Pier and DeckFlexibility on the Seismic Response of IsolatedBridges[J].J Bridge Eng,2006,11(1):109-121.
[8]DICLELI M.Seismic Design of Lifeline Bridge UsingHybrid Seismic Isolation[J].J Bridge Eng,2002,7(2):94-103.
[9]MORONI M O,BOROSCHEK R,SARRAZIN M.Dynamic Characteristics of Chilean Bridges with Seis-mic Protection[J].J Bridge Eng,2005,10(2):124-132.
[10]王丽,阎贵平,孙立.LRB隔震桥梁减震效果分析[J].工程力学,2003,20(5):124-129.WANG Li,YAN Gui-ping,SUN Li.Analysis of Seis-mic Response of Isolated Bridges with LRB[J].En-gineering Mechanics,2003,20(5):124-129.
[11]龚一琼,胡勃,袁万城,等.连续梁桥的减隔震设计[J].同济大学学报:自然科学版,2001,29(1):94-98.GONG Yi-qiong,HU Bo,YUAN Wan-cheng,et al.Seismic Isolation Design of Continuous Girder Bridges[J].Journal of Tongji University:Natural Science,2001,29(1):94-98.
[12]郭磊,李建中,范立础.大跨度连续梁桥减隔震设计研究[J].土木工程学报,2006,39(3):81-85.GUO Lei,LI Jian-zhong,FAN Li-chu.Research onSeismic Isolation Design for Long-span ContinuousBridges[J].China Civil Engineering Journal,2006,39(3):81-85.
[13]薛晓锋,胡兆同,刘健新.功能分离式桥梁减震支座[J].长安大学学报:自然科学版,2005,25(1):33-36.XUE Xiao-feng,HU Zhao-tong,LIU Jian-xin.Inte-grated Isolation Bearing of Bridge[J].Journal ofChang an University:Natural Science Edition,2005,25(1):33-36.
[14]李加武,卢斌,刘健新.墩高及支座剪切刚度对连续梁减震性能影响的试验研究[J].长安大学学报:自然科学版,2002,22(2):39-41.LI Jia-wu,LU Bin,LIU Jian-xin.Experimental Studyon the Effect of Pier High and Bearing Shear Stiffnesson the Seismic-induced Behavior of Continuous Beam[J].Journal of Chang an University:Natural ScienceEdition,2002,22(2):39-41.
[15]于泳波,万振江,刘健新.减震技术在公路桥梁中的应用及地震反应分析[J].长安大学学报:自然科学版,2004,24(2):58-60.YU Yong-bo,WAN Zhen-jiang,LIU Jian-xin.SeismicReduction Design for Highway Bridge and SeismicResponse[J].Journal of Chang an University:NaturalScience Edition,2004,24(2):58-60.
[16]冯刚宪,李建中,宋建平,等.双曲面球型减隔震支座:中国,1873124[P].2006-12-06.FENG Gang-xian,LI Jian-zhong,SONG Jian-ping,et al.Double Spherical Aseismic Bearing:China,1873124[P].2006-12-06.
[17]焦驰宇,胡世德,管仲国.FPS抗震支座分析模型的比较研究[J].振动与冲击,2007,26(10):113-117,192.JIAO Chi-yu,HU Shi-de,GUAN Zhong-guo.Com-parison Study on Analysis Models of FPS SeismicIsolation Support[J].Journal of Vibration and Shock,2007,26(10):113-117,192.
[18]JTG/T B02-01—2008,公路桥梁抗震设计细则[S].JTG/T B02-01—2008,Guidelines for Seismic Designof Highway Bridges[S].
[19]曹新建.大型桥梁的抗震能力设计策略[D].上海:同济大学,2009.CAO Xin-jian.Design Strategy on Aseismic Capacityof Large Bridge[D].Shanghai:Tongji University,2009.
[2]范立础,王志强.桥梁减隔震设计[M].北京:人民交通出版社,2001.FAN Li-chu,WANG Zhi-qiang.Bridge Seismic Damp-ing or Isolation System Design[M].Beijing:ChinaCommunications Press,2001.
[3]王志强,胡世德,周红卫,等.卢浦大桥减、隔震装置的研究[C]//李坚,周世忠.第十五届全国桥梁学术会议论文集.上海:同济大学出版社,2002:372-379.WANG Zhi-qiang,HU Shi-de,ZHOU Hong-wei,et al.Research on Seismic Damping or Isolation Sys-tem for Lupu Bridge[C]//LI Jian,ZHOU Shi-zhong.Proceedings of the 15th National Conference onBridge Engineering.Shanghai:Tongji UniversityPress,2002:372-379.
[4]JANGID R S.Seismic Response of Isolated Bridges[J].J Bridge Eng,2004,9(2):156-166.
[5]JANGID R S.Stochastic Response of Bridges Seis-mically Isolated by Friction Pendulum System[J].JBridge Eng,2008,13(4):319-330.
[6]MATSAGAR V A,JANGID R S.Base Isolation forSeismic Retrofitting of Structures[J].Practice Period-ical on Structural Design and Construction,2008,13(4):175-185.
[7]KUNDE M C,JANGID R S.Effects of Pier and DeckFlexibility on the Seismic Response of IsolatedBridges[J].J Bridge Eng,2006,11(1):109-121.
[8]DICLELI M.Seismic Design of Lifeline Bridge UsingHybrid Seismic Isolation[J].J Bridge Eng,2002,7(2):94-103.
[9]MORONI M O,BOROSCHEK R,SARRAZIN M.Dynamic Characteristics of Chilean Bridges with Seis-mic Protection[J].J Bridge Eng,2005,10(2):124-132.
[10]王丽,阎贵平,孙立.LRB隔震桥梁减震效果分析[J].工程力学,2003,20(5):124-129.WANG Li,YAN Gui-ping,SUN Li.Analysis of Seis-mic Response of Isolated Bridges with LRB[J].En-gineering Mechanics,2003,20(5):124-129.
[11]龚一琼,胡勃,袁万城,等.连续梁桥的减隔震设计[J].同济大学学报:自然科学版,2001,29(1):94-98.GONG Yi-qiong,HU Bo,YUAN Wan-cheng,et al.Seismic Isolation Design of Continuous Girder Bridges[J].Journal of Tongji University:Natural Science,2001,29(1):94-98.
[12]郭磊,李建中,范立础.大跨度连续梁桥减隔震设计研究[J].土木工程学报,2006,39(3):81-85.GUO Lei,LI Jian-zhong,FAN Li-chu.Research onSeismic Isolation Design for Long-span ContinuousBridges[J].China Civil Engineering Journal,2006,39(3):81-85.
[13]薛晓锋,胡兆同,刘健新.功能分离式桥梁减震支座[J].长安大学学报:自然科学版,2005,25(1):33-36.XUE Xiao-feng,HU Zhao-tong,LIU Jian-xin.Inte-grated Isolation Bearing of Bridge[J].Journal ofChang an University:Natural Science Edition,2005,25(1):33-36.
[14]李加武,卢斌,刘健新.墩高及支座剪切刚度对连续梁减震性能影响的试验研究[J].长安大学学报:自然科学版,2002,22(2):39-41.LI Jia-wu,LU Bin,LIU Jian-xin.Experimental Studyon the Effect of Pier High and Bearing Shear Stiffnesson the Seismic-induced Behavior of Continuous Beam[J].Journal of Chang an University:Natural ScienceEdition,2002,22(2):39-41.
[15]于泳波,万振江,刘健新.减震技术在公路桥梁中的应用及地震反应分析[J].长安大学学报:自然科学版,2004,24(2):58-60.YU Yong-bo,WAN Zhen-jiang,LIU Jian-xin.SeismicReduction Design for Highway Bridge and SeismicResponse[J].Journal of Chang an University:NaturalScience Edition,2004,24(2):58-60.
[16]冯刚宪,李建中,宋建平,等.双曲面球型减隔震支座:中国,1873124[P].2006-12-06.FENG Gang-xian,LI Jian-zhong,SONG Jian-ping,et al.Double Spherical Aseismic Bearing:China,1873124[P].2006-12-06.
[17]焦驰宇,胡世德,管仲国.FPS抗震支座分析模型的比较研究[J].振动与冲击,2007,26(10):113-117,192.JIAO Chi-yu,HU Shi-de,GUAN Zhong-guo.Com-parison Study on Analysis Models of FPS SeismicIsolation Support[J].Journal of Vibration and Shock,2007,26(10):113-117,192.
[18]JTG/T B02-01—2008,公路桥梁抗震设计细则[S].JTG/T B02-01—2008,Guidelines for Seismic Designof Highway Bridges[S].
[19]曹新建.大型桥梁的抗震能力设计策略[D].上海:同济大学,2009.CAO Xin-jian.Design Strategy on Aseismic Capacityof Large Bridge[D].Shanghai:Tongji University,2009.
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